A393284 Terms in Recamán's sequence A005132 which are the result of a record number of addition steps.

1, 3, 6, 494, 152565, 31298678, 720867013350, 18371312964460706, 234941272103180897, 2142068538431762319531, 10885227622763282465106057054779566143361386925

Offset

1,2

Comments

A390717 gives corresponding indices into A005132.

Links

Table of n, a(n) for n=1..11.

Example

Let R(n) = n-th term of Recamán's sequence (A005132). R(111)..R(115) are 40, 152, 265, 379, 494; so R(115)=494 is the result of four consecutive addition steps, and is the first such R(n). Thus a(4) = 494.

Crossrefs

Cf. A005132, A390717 (corresponding indices), A392407 (record subtraction indices), A393285 (record subtraction terms), A057165 (addition steps), A057166 (subtraction steps).

Sequence in context: A157540 A179267 A171928 * A308259 A034879 A113588

Adjacent sequences: A393281 A393282 A393283 * A393285 A393286 A393287

Keyword

nonn

Author

Benjamin Chaffin, Feb 09 2026

Status

approved